Sifter closure



R NYD S IFTER CLOSUR Filed Dec. 4, 1942 2711194711607) Rea 00,05,

Patented Jan. 2, 1945 SIFTER CLOSURE ,Robert Nyden, Manhasset, N. Y., assignor to F. N.

Burt Company, Inc., Buffalo, N. Y., a corporation of Delaware Application December 4,1942, Serial No. 467,853 8 Claims. ('01. 222-555) This inventionrelates to improvements incontainers and more particularly to improvements in closures of the dispensing or siftertype adapted for dispensing free flowing material, such as toilet or other powders. The improved closure has been particularly designed so that it may be conveniently constructed entirely of non-metallic materials, thus to conserve metallic materials that are vitally needed at this time for national defense. At the same time a high degree of antisift properties have been maintained. The closure has been especially designed, furthermora so as to be capable of production in large quantities by factory methods at low cost. Thusthe improved closureQtogether with the entire container, is especially designed so as to be constructed of fibrous materials, such as, cardboard, fiberboard, pulp, wood, or from the various plastic materials. 6

It is a general object of the invention to provide a closure of the class mentioned that can be made of non-metallic materials, quickly and easily assembled in manufacture, and at the same time provide a tight anti-sift joint that is readily adjustable to maintaintightness so as to prevent escape or sifting of the container contents when the closure is in closed position:

A further object of the invention is to provide an improved adjustable friction holding device for holding the closure parts in tight closing position, and embodying a friction dowel or dowel pin frictionally engaging in an aperture in the top or cap of the container, thus making it easy tomaintain the closure elements in tight anti-sift condition during long periods of usage, while at the same time providing for easy operation of the closure member into closing or opening positions and for holding it there. r f l Still another object of the invention is to provide an improved closure of the class mentioned adapted for economical manufacture by factory methods in large quantity production, wholly from non-metallic materials and at the same time as-'- suring a practica1 closure that iseasily handled and operated and capable of maintaining nonleak qualities over long periods of use.

Other objects of the invention are in part pointed out below in connection with the detailed description of certain illustrative embodiments, and will be in part obvious in connection therewith. l

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts, which will be exemplithe scope of the application of which will be in-,

dicated in the claims.

For a more complete disclosure of thenature,

obj ectsand advantages of the invention, reference is had to the following detailed description of an illustrative but preferred embodiment of themvention, and to the accompanying drawing in which:

, Fig. 1 is a side elevation of a can or container for toilet powder or similar material and em bodying the invention;

Fig. 2 is a top plan view thereof; 6 Fig. 3 is an enlarged vertical section taken substantially on the line 3-3 of Fig. 2, the closure being shown partially diagrammatically for clearness; I i

Fig. 4 is a plan view similar to Fig. 2 but showing a slightly modified embodiment.

Referring to the drawing for a detailed description of the illustrative embodiments of the invention there shown, the container or powder can 5 may be of any desired size and shape but 'is preferably constructed of non-metallic material, such as paper, cardboard, fiberboard, and the like, and has an interior compartment for receiving the powder or other material. The container has an opening at its upper end which is 6 closed by a head or upper wall 6 having a downwardly extending circumferential attaching flange 1 adapted to fit tightly within the upper walls of. the container 5. The head or cap 6 is preferably formed with an outer circumferential flange 8 forming a seat against which the upper end of the container wall 5rests. At its outer surface the attaching flange I is preferably formed with a circumferential bead 9 extending entirely around the flange and engaging the inner surface of the container wall 5. This bead 9 is so constructed and arranged as to extend or bite slightly into the inner wall surface, thus holding the head in assembled relation and at the same time making a tight anti-siftjo-int. By means of this arrangement the head Bis easily assembled with the body 5 of the container so as to make a permanent tight joint. It i obvious that a different attaching means may be provided for the head 6, and, if desired, the head may be made as an integral part of the body of the container 5. l

In the embodiment shown in the drawing the container closure is assembledupon the container head 6 which is preferably made of wood, fiberboard, plastic material, or other non-metallic material. The head 6 is formed with an upper thickfied in the construction hereinafter set forth and enedportion l0 finished to form an upper'flat sup- -such; as square sor;poly ona1.

porting surface or seat for the closure member hereafter, fully described. This thickened portion or wall I0 is formed with one or more dispensing openings or passageways II extending vertically I through the wall to the interior of the container.- This thickened wall It! is also formed with a centrally disposed retaining opening I2 extending vertically through the Wall andpreferably of a diameter ordinarily considerably larger than .that of the dispensing openings II. This retaining opening I2 presents a smooth inner frictional surface for a purpose later fully described.

A closure member or plate I3 rests upon and is supported by the upper surface or seat of the thickened wall ID. This closure'meniber is ;pro-

vided with one or more dispensing openings M. In the embodiment of Figs. 1, 2 and 3 there are several spaced dispensing opening :I1I in the head 5 and a corresponding number of equallyspaced openings I4 in the closure member I3. In'theem- .bodiment; shown, the closure .member 3| 3 is in the form of a flat rotary disk havinga flatdowersur- ,facerconforming tothat oftheseat ofthe head 6. .The r closure, member also. has a; centrally disposed :retainingopening for rotatablyv mounting and re- I spaced afor alignment with the respective idiS- pensing,openings:I..I and I4. Iftheretainingdisk J16 is-.of:smallerdiametervso that the outer edges thereof terminate .at or :inside the .dispensing openings ,et-I and J4, vas iis sometimes desirable, .in

I3 and substantially through the thickened wall II] having a fiat imier end surface. As it is also of considerable diameter, as shown, it thus has a sufiiciently large peripheral surface whereby it functions to frictionally engage with the inner frictional surface presented by the retaining aperture I2 to retain the parts securely in assembled relation. Since the dowel pin extends through the central retaining opening of .the rotary closure disk I3, it serves as a pivotal support upon which the closure disk rotates. The rotary closure disk'is sufficiently loose upon the pivotal sup- :port .or dowel I8 to permit free rotary movement of the disk into opening and closing positions.

.ln'the-disclosure of Fig. 3 it will be understood "that "the closure elements are shown partially diagrammatically as being separated slightly in ordenthatthe construction and arrangement may be seen more clearly. When the parts are in operative position the rotary disk rests snugly against the .upper-seattof the wall all .and :the retainingt disk L6 .restssnugly;- against,- the-upper-surface iOf .the closure 7 disk. Therefore, the .olosure disk I3 is retainedzfrictionally inits open orzclosed position bytengagement with the *head and the v retainingmember I16.

.In the embodimentof :Fig. .4 the structureds ..similar-,t that'of the embodiment, above described .-such casenthe-idispensing openings :IFI-will notbe I needed.

.The :retaining {disk I-6'is adapted to hold the .closure disk EI-3 at :all times tightly against the ;seat.at the runner surface :of :the head 6 so .as to tform a .tight .antiesift joint ,for the dispensing -.openings {II when the Closurediskisrotated .into

closingiposition,aas.:sho-wn,in Fig.2. In order to (maintain this tight anti-sift relation=at all times, an (adjustable ifriction :attaohing .device is vpro- =vide.d... -;In :the' embodimentwshown :this 'friction .9;

attaching device embodies-the dowel or dowel pin I J18 attached to ;and extending downwardly from the inner surface ofthe retaining disk I6. Although this dowel ;;pin. may be; made'integral with the retaining gdisk I6, .if desired, 'it is preferably xmadeas-aseparate part, as shown, andis atv,tached tothe undersurface of :the retaining disk .by an appropriate attaching .means. Wenient to. form the .dowel pin :witha fiat :upper surface-and to attach ittotthecunder'surfane :of v

It is com.

and corresponding Parts are indicated b the same reference ,numerals. However, in this .emv,bodiment the retainingedisk I6 has but a single dispensing opening 52.!) and the head lor wall .6 of the containerfis provided witha similaraligning dispensingopening. Therotary .olosure'disk .I3 in this case is formed with two diametrically .op- I posed dispensing openings 2| corresponding to I and functioning s'imilarlyto the dispensing openings M of the embodimentpreviously described.

From the foregoing disclosure, it will beseen that the rotary closure disk I13 of the different embodiments can .be maintained at all times in close sift-"tight relationship with'the dispensing openings of the head B by the very, simple adjustable'frictionholdin'g device provided bythe dowel 1'8. In case'at any "time there "becomes a slight looseness "between; the rotary closure member I3 and the container'hea'd 'due'to'wean-to shrinkage, "or t any other cause, this may be "quickly and 'easilyremedied-by-merely-pressing upon-the outer surface of the retaining disk-l6 "oppo-siteto'the dowel pin so-as -to'force 'the latter a little further into the retaining socket or aperture -'I2 of "the head. The dowelpin-together'with theretaining a disk and the rotary disk are maintained in this adjusted tight-position'bymeans'of the frictional engag'ement between the pin and the *friction surf-ace of the retainingopening. -Also,' the parts can be quickly and easily assembled'at thefactory merelylby placing the closure disk'in its operative position and inserting the :dowel pin :with the reitaining \disk into position in the retaining 'aper- :ture 1.2. L'I he1parts-are held"together :byth 'rrictional "attachment,anoadditionalrattaching means ixheing :reguired. -When :the :parts -.:are being :as- -sembled the-dispensing =apertures=of the retaining disk I6 are adjusted toalign:respectively withthe .dispensing."apertures:of the head fi. ".The dispens- :ing 'apertures cMrof :the rotary closure disk are .lengthtmextend through;the:rotaryiclosuredisk =1 5 1Si1'1CB :issued as :Patent :Number 523363382, over which the present invention is an improvement.

Since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scopethereof, it isintended that all matter contained in the above description or shown in the accompanying drawing shall be, interpreted as illustrative and not in a, limiting sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

relatively shaped and proportioned so as to frictionally engage in holding relation in different 1. Ina container closure, in combination, a,

containerwall or head havingaretaining opening with a friction surface and having one or more dispensingopenings, a closure member mounted for movement into opening or closing positions with reference to said dispensing opening, and a retaining member for said movable closure member having an attaching extension forming a friction dowel pin frictionally engaging said friction surface of said retaining opening, said friction surface and said dowel pin being relatively shaped and proportioned so as to frictionally engage in holding relation in different relative longitudinal adjustments of said dowel pin to provide an adjustable friction holding device for adjusting the degreeof tightness of said closure member. I

. 2. In a container closure, in combination, a container wall or headmember having one or more dispensing openings, a closure'mounted for movement into opening or closing positions with reference to said dispensing opening, a retaining member for said movable closure, one of said members having a retaining opening, with 9, friction retaining surface and the other said member having an attaching extension forming a friction dowel pin projecting from one side thereof, said dowel pin having an outer. friction surface frictionally engaging said friction surface of said re taining opening, said friction retaining surface and said dowel pin being relatively shaped and proportioned so as to frictionally engage in holding relation indifferent relative longitudinal adjustments of said dowel pin to provide an adjustable friction holding device for adjusting the degree of tightness of said closure member. i 3. In a container, in combination, a container wall or head having a dispensing opening and having a surface forming a closure member seat,

a. closure member mounted on said seat so as to,

make a tight joint therewith and movable into opening or closing positions with reference to said dispensing opening, a retaining member overlying said closure member so as to hold the latter against said seat, and a friction dowel pin connected to said retaining member and frictionally held in different relative longitudinal adjustments thereof t form an adjustable friction holding device for adjusting the degree of tightness of.

said closure member. l

4. In a container, in combination, a head or wall memberhaving a surface forming a closure seat and having a dispensing opening, a closure mounted on said seat s as to make a tight joint therewith,-and movable into opening or closing positions with reference to said dispensing opening, a retaining member for said closure to hold the latter against said seat, one of said members having a retaining opening with a friction retaining surface, and a dowel mounted upon the other of said members and projecting from one side thereof and extending into said retaining opening, said dowel having an outer friction surface frictionally engaging the friction surface of said retaining opening, said friction surfaces being member.

relative longitudinal adjustments of said dowel to form an adjustable friction holding device for adjustingthe degree of tightness of said closure 5. In a container, in combination, a container head or wall member having a surface forming a closure seat, said Wall member having a dispensing opening, a rotaryfclosure disk mounted on said seat so as to make a tight joint therewith and movable into opening or closing positions with reference to said dispensing opening, said closure disk having a retainingopening and] having a I relatively shaped and proportioned so as to frictionally engage in holding relation in different relative longitudinal adjustments of said dowel to provide an adjustable friction holding device for adjusting the degree of tightness of said closure member.

6. Ina container, in combination, a, container wall or head having a surface forming a closure member seat, said wall or head having a dispensing opening and having also a, retaining opening j with an interior friction surface, a rotary closure disk mounted on said seat so as to make a tight joint therewith and movable into opening or closing positions with reference to said dispensing opening, said closure disk having a retaining opening and having a dispensing opening adapted to register with said dispensing opening of said wall or head, a retaining disk overlying said closure disk so as to hold the latter againstsaid seat, an outer marginal portion of said retaining disk extending outwardly beyond the dispensing wardly from one side of said retaining disk and opening of said closure disk and having a dispensing opening adapted to register with the dispensing openings of the head and closure disk, and a dowel mounted upon and projecting inextending into said retaining openings of said wall or head and rotary disk and rotatably mounting the latter, said dowel having an outer friction surface frictionally engaging the friction surface of said retaining opening of said head,

said friction surfaces being relatively shaped and proportioned so as to frictionally engage in holding relation in different relative longitudinal ad-.

justments of said dowel to provide an adjustable friction holding device for adjusting the degree of tightness of said closure member.

'7. In a container closure, in combination, a container wall or head having a retaining opening with a friction surfaceand having one or more dispensing openings, a closure member mounted for movement into opening or closing positions with reference to said dispensing opening, a retaining disk for said movable closure member, a friction dowel pin adhesively attached to saidretaining disk and extending from one side of the latter and frictionally engaging said friction surface of said retaining opening, said friction surface and said friction dowel. pin being melatirv'ely shaped :ansipmmrtionegl :50 as "to me- ;tionafly en a e :in aldin relation in difierent relative tlen i-budinal @Jiustments of said dowel pin 12o pr vide :asijueiable {iriction holding $13,8-

tions for adjusting the degree of tightness Qt sa -id movable cl ue fle member in its pperafive pQs'it'ion.

.a gen a ner, szomhin on, a container wall .91 headmemberhawin a nopenin a gLhwvin fllpq rei em enseata.elqsunemembar :menn ed 9n isgid seat and movable i zhemon into @p ng and ;1os,in;g paesitiqns with miemnce .iber m1 :said seat, said :frietion retaming device anew/mine part in retaining engagement 

